System and method for measuring vibration situation of strip steel in gas cooling section

Abstract

The invention relates to a system and a method for measuring the vibration situation of strip steel in a gas cooling section. The system comprises a gas spraying and blowing device, a strip steel fixing device and a displacement measuring device, wherein the gas spraying and blowing device comprises a draught fan, a draught fan outlet regulating valve, an air passage main pipe flow meter, a left air box and a right air box which are connected in sequence; the displacement measuring device comprises a displacement probe, and the displacement probe is sequentially connected with a displacement signal converter and a signal collection computer by cables. The method comprises the following steps of S1, calibrating a displacement measuring system; S2, carrying out a P-V (Pressure-Volume) test on a gas spraying and blowing system; S3, installing the displacement probe; S4, assembling the system for measuring the vibration situation of the strip steel in the gas cooling section; S5, carrying out a vibration test; S6, carrying out spectral analysis on vibration measuring data. According to the system and the method, disclosed by the invention, the vibration hazard of the strip steel caused by a gas spraying box which is researched and developed at the moment can be tested and evaluated, and the safety of plate strips of a cold rolled metal thin plate unit which is debugged or produced at the moment can be monitored.

Description

technical field [0001] The invention relates to the technical field of processing cold-rolled metal strips, and more specifically relates to a system and method for measuring the vibration of strip steel in a gas cooling section. Background technique [0002] With the increasing demand for high-quality products in various industries, the surface quality and output requirements of cold-rolled sheet products are getting higher and higher, and the speed of strip steel running on the production line is also increasing. Due to mechanical vibration and process equipment vibration or impact on the strip (such as the impact of water flow in pickling, the impact of air flow or water mist in the annealing cooling section, etc.), the vibration of the strip in motion will be caused, and this vibration may cause endanger the safety of the production line. For example, when the vibration frequency of the strip is consistent with the frequency of a certain transmission equipment of the un...

AI Technical Summary

Problems solved by technology

If this vibration is not suppressed, it will have a serious impact on production. When the strip deviates from the center line of the unit after vibration, the cooling effect will usually be deteriorated. What is more serious is that the vibration may cause the strip to collide with the nozzle.

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